What equipment would you use?
I want to dig a rectangle in a hay field 1 foot deep, 10 feet long and 3 feet wide. The idea is to get all of the hay out, roots and all. This has been a huge problem since I started gardening down there. I have an 18" heavy duty tiller and a lightweight 9" tiller. My local Home Depot also has a trencher for rent for a reasonable price for a day. There's also a sod cutter for rent. I have never used either of these. It's not worth it to me to rent a Bobcat.
What would you use? Any of these things? All of them? Something else?
Thank you.